NOT since the Invincibles were in their pageantry, have Arsenal had the chance to enjoy a past chuckle at Chelsea.
However, here, on the rear of three straight losses and with a center-forward who hadn't scored a Premier League goal in a year, was a night for the Gooners to relish.
They gloated at Stamford Bridge's unfilled seats and void meeting room.
They giggled at Chelsea's dim-witted defending.
Also, they cheered when Eddie Nketiah struck a triumphant twofold, two times exploiting a group of European heroes who chose to guard from jokester's point of view.
Everything implied that Arsenal are level on points with Tottenham in the race for the final Champions League place.
Next month's North London derby - only ten days before the climax of the season - vows to be the main such apparatus in years.
Mikel Arteta's puerile group seemed to have been thumped right off base by those hopeless losses to Crystal Palace, Brighton and Southampton.
However, here, in a surprisingly totally open derby, they were gifted a way back in with the general mish-mash.
Arsenal attacked with purpose and pace. They safeguarded well on occasion in the second half, as well.
But there was no mixing up that Arteta's side had been gifted three of their four goals.
It was Chelsea's third progressive home loss - during which time they have yielded 11 goals.
While they might have a FA Cup last to anticipate one month from now, you can be guaranteed that adversaries Liverpool will fancy their possibilities tearing into this riffraff.
There were around 9,000 void seats, as the counter Putin sanctions bit following Roman Abramovich's departure - yet those easygoing Chelsea fans who could have purchased tickets, will have felt they avoided a disaster.
Arsenal supporters lapped everything up - 'very much like the past times, there's no one here'.
Very much like the prior days Abramovich showed up and the Gunners could call themselves the best group in London.
Despite the fact that the game was critical to Arsenal, there was a lighthearted, start to finish end-of-season feel about it from the off.
It seemed like you were watching a lot of mates exploiting the more drawn out nights. On the off chance that somebody had pronounced 'rush goalie' or 'knockout Wembley' it could never have appeared to be awkward.
When the group sheets were out, we could perceive it wasn't significant to Chelsea - who are close to 100% to complete no higher or lower than third - in light of the fact that Tuchel gave Romelu Lukaku his most memorable Premier League start since February.
The enormous Belgian before long terminated wide across goals after Wembley hero Ruben Loftus-Cheek had thundered forward and delivered him.
Then came the pointless fooling around - four goals over the course of about 19 minutes.
Andreas Christensen kicked the party off by shinning a back-pass, permitting Eddie Nketiah to nip in and opening past Edouard Mendy for his most memorable Premier League goal in over a year.
Arsenal's lead had a butterfly lifespan - Loftus-Cheek winning possession and taking care of Timo Werner with passes, whose shot took a terrible deflection off Granit Xhaka's heel, allowing Aaron Ramsdale no opportunity.
Then, at that point, a second Arsenal goal - and the sort Arsene Wenger used to fantasize about.
Xhaka began everything with some Fred Astaire footwork on the edge of the box. At the sharp end, Bukayo Saka and Martin Odegaard consolidated for Smith Rowe to get it into the edge of the net with a bed time story.
Once more, however, Chelsea answered quickly - Mason Mount winning possession, kippering Mo Elneny and twisting in a low place which Azpilicueta wounded in at the close to post.
Smith Rowe, with four men around him, some way or another wriggled free however shot narrowly wide.
It was all pleasingly chaotic. The guarding non-existent now and again. This isn't the kind of match world class mentors appreciate however as light amusement for the general population, it was okay.
Tuchel answered by supplanting the hapless Christensen with Thiago Silva at half-time - yet some way or another Chelsea's defending get getting worse.
Azpilicueta played a dozy pass to Arsenal full-back Nuno Tavares, who centerd for Nketiah.
The youthful striker was encircled by Thiago, N'Golo Kante and Malang Starr - who made an aggregate pig's ear of attempting to clear, permitting Nketiah three wounds at it before he bored into the net.
Tuchel, noticeably fuming, dragged away Lukaku, to a melody of boos - focused on the striker, as opposed to the choice to pull out him - and presented Kai Havertz.
Ramsdale spilled a Reece James shot, which was mixed clear yet Arsenal were by and large looking strong and formed.
And afterward in the 90th moment, one more talk from Azpilicueta, who wrestled over Saka off the ball.
Ref Jon Moss highlighted the spot and Saka smashed it home prior to praising with those celebrating Gooners - who chuckled their direction as far as possible back across town.
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